Patents by Inventor Chun Yuan Chang

Chun Yuan Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7744363
    Abstract: A valve device is configured for obturating an opening of a channel defined in an injection molding device. The valve device includes a plug movably received in the channel, and a resilient member connected with the plug. The plug includes an obturating portion for obturating the opening of the channel. The resilient member is configured for driving the plug to its original position where the obturating portion obturates the opening, after the opening of the channel is opened.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: June 29, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chun-Yuan Chang
  • Publication number: 20100078400
    Abstract: The present invention provides a quick-assembly laminated file tray, which enables quick assembly and lamination of file trays by adapting them with the supports; it is designed in a manner that, some notches are correspondingly arranged at both sides of the file tray, and a slot is opened at lower side of the notch, such that embedded block at upper side of the support is adapted with the slot of the file tray, and the groove of the support is mated with the notch of the other file tray, thus realizing quick and robust lamination of the file trays. Furthermore, the support is designed into a beveled shape, such that various layers of file trays can be staggered for conveniently taking the files.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 1, 2010
    Inventor: Chun-Yuan Chang
  • Publication number: 20100071845
    Abstract: A method for forming a fiber material component, includes: providing a foil, which includes a printed layer having printed patterns or characters thereon; placing a plurality of carbon fibers arranged in a crisscrossed form; placing the foil and the crisscrossed carbon fibers into a hot-press die, and sticking the printed layer of the foil on the carbon fibers; closing the hot-press die to fuse the carbon fibers together and transfer printing the patterns or characters of the printed layer on the carbon fibers to form a carbon fiber material component; and cooling the hot-press die, and then removing the formed carbon fiber material component.
    Type: Application
    Filed: December 24, 2008
    Publication date: March 25, 2010
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHUN-YUAN CHANG
  • Publication number: 20100072663
    Abstract: A method for producing in-mold-decoration plastic articles includes following steps: providing a mold defining a cavity therein; providing a foil with a plurality of spaced transparent label films attached thereto, each label film having decoration patterns thereon; transporting the foil into the mold, with one of the plurality of label film located in the cavity; injecting molten resin into the cavity of the mold to form a plastic article; unlocking the mold, and separating the label film together with decoration patterns from the foil, therefore allowing the decoration patterns to be adhered to a surface of the plastic article and covered by the label film; transporting portions of the foil without transparent label films out of the mold.
    Type: Application
    Filed: December 24, 2008
    Publication date: March 25, 2010
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHUN-YUAN CHANG
  • Patent number: 7669745
    Abstract: The present invention provides a dual protective device of a heavy-duty stapler, in particular to a control device of stapler that controls safely the action of striking slice with spring; of which, a base-controlled active protective device is mounted at rear side of the main body of the stapler, and operated in combination with a manually-operated safety switch that's arranged at front side of the main body of the stapler, thus forming an easy-to-use dual protective device.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: March 2, 2010
    Inventor: Chun-Yuan Chang
  • Patent number: 7655178
    Abstract: A method for elongating a foil, comprising steps of: providing an injection molding device, the injection molding device comprising a male mold having a projecting part protruding and a female mold defining a cavity; transmitting the foil into the injection molding device and between the male and female molds; clamping the male and female molds to form a molding space, the molding space being separated into a first airproof space adjacent to the female mold and a second airproof space adjacent to the male mold by the foil; vacuuming the first airproof space to suck the foil toward the first airproof space; and inputting thermal medium into the second airproof space to press the foil to cling to the inner surface of the cavity of the female mold.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: February 2, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chun-Yuan Chang
  • Patent number: 7641845
    Abstract: A method for manufacturing a foil decorated molding includes steps of: providing an injection molding device, the injection molding device comprising a male mold and a female mold, the male mold having a projecting part, the female mold defining a cavity; transporting the foil into the injection molding device and between the male and female molds; locking the foil to the female mold to form an airproof space together with the cavity of the female; vacuuming the airproof space to suck the foil toward the female mold; clamping the male and female molds to form a molding space; inputting thermal medium into the molding space to press the foil to cling to an inner surface of the cavity of the female mold; injecting molten resin into the molding space; and cooling and opening the injection molding device, the molten resin cooled forming a molding.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: January 5, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Chun-Yuan Chang
  • Publication number: 20090218382
    Abstract: The present invention provides a sheathing device for the staple channel of stapler, and more particularly to one which could provide sufficient protection for the staple channel of powerful stapler under continuous strong friction and impact force of the rivet; it is mainly characterized in that, a U-shaped depressed zone is formed within the staple channel of the stapler, and a U-shaped steel sheet is embedded correspondingly; with direct contact of U-shaped steel sheet and the rivet, it is possible to prevent efficiently rupture of the main body of the stapler and poorer stapling performance arising from impact force and friction.
    Type: Application
    Filed: February 28, 2008
    Publication date: September 3, 2009
    Inventor: Chun-Yuan Chang
  • Publication number: 20090184151
    Abstract: The present invention provides a dual protective device of a heavy-duty stapler, in particular to a control device of stapler that controls safely the action of striking slice with spring; of which, a base-controlled active protective device is mounted at rear side of the main body of the stapler, and operated in combination with a manually-operated safety switch that's arranged at front side of the main body of the stapler, thus forming an easy-to-use dual protective device.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 23, 2009
    Inventor: Chun-Yuan Chang
  • Publication number: 20090140457
    Abstract: An apparatus for in-mold-decoration includes a mold, a foil, and a press member. The mold includes a female mold and a male mold with a protrusion protruding therefrom towards the female mold. The foil is applied to a surface of the female mold facing the male mold and corresponding to a surface of a molded product to be decorated. The press member is positioned between the male mold and the female mold and the foil is further extended to be on a surface of the press member to be urged thereby to cover an end of the molding space as the press member is positioned to cooperate with the male and female molds to define a molding space thereamong, thereby ensuring the foil with a printed layer thereon completely and uniformly covers the surface of the molded product to be decorated, even unto its very edges.
    Type: Application
    Filed: December 28, 2007
    Publication date: June 4, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: CHUN-YUAN CHANG
  • Publication number: 20090136609
    Abstract: An apparatus for an in-mold-decoration molding includes a female mold and a male mold. The female mold has an enclosing portion protruding therefrom. The male mold has a protrusion protruding therefrom. The protrusion is step-shaped and includes a receiving portion and a protruding portion protruding from the receiving portion. The receiving portion is configured for fitting with the enclosing portion and allowing a foil to attach thereto, therefore the male mold and the female mold cooperate to define a molding space with an end thereof being covered by the foil.
    Type: Application
    Filed: December 28, 2007
    Publication date: May 28, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: CHUN-YUAN CHANG, CHUNG-CHI TSENG
  • Publication number: 20090072442
    Abstract: An apparatus for molding plastics having relief decorations includes a mold, a foil, and a transport. The mold defines a cavity therein. The foil has a printed layer, and relief patterns are provided on the printed layer. The transport is used for transporting the foil with the printed layer thereon into the mold.
    Type: Application
    Filed: December 11, 2007
    Publication date: March 19, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chun-Yuan Chang
  • Publication number: 20090065548
    Abstract: A stapling device includes a housing and a cover pivotally attached to a base member, a staple drive plate received in the housing for staple driving purpose, a spring device attached to the housing for biasing the staple drive plate, and a lever attached in the housing with the pivot pin having one end engageable with the spring device for moving the end portion of the spring device and the staple drive plate upwardly relative to the housing, and the lever is disengageable from the end portion of the spring device when the staple drive plate is moved to an upper portion of the passage of the housing and to be moved and driven by the spring device.
    Type: Application
    Filed: September 29, 2008
    Publication date: March 12, 2009
    Inventor: Chun Yuan Chang
  • Publication number: 20090060629
    Abstract: A portable and hangable document file folder, which is an improvement to a typical stationery folder that is placed and kept stationary. The folder has hidden handles and a hidden hang rod that may be hung, an integrally formed elastic holding plate for clamping sheets to be written, and a movable cover piece disposed on a side surface of the folder to cover a removable sheet. Thus, the folder may be placed or hung, may be carried out and provide a platen for the momentary writing and recording so that a multi-function document file folder is provided.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Inventor: Chun Yuan Chang
  • Publication number: 20090049967
    Abstract: The invention provides a hole punch structure. More particularly, one end of an exposed longitudinal handle is moved together with a slide rod in a hole-punching mechanism covered by a casing. Thus, when the other end of the handle is pressed down, the slide rod is also moved transversely, a push rod connected to the slide rod is also moved, and a tool shelf is pressed vertically downward to achieve a hole-punching operation of a punching post. This hole punch structure works according to the principle of lever of the longitudinal handle and becomes a completely covered, laborsaving and safe hole-punching apparatus.
    Type: Application
    Filed: August 22, 2007
    Publication date: February 26, 2009
    Inventor: Chun-Yuan Chang
  • Publication number: 20090051077
    Abstract: An apparatus for molding plastics having relief decorations includes a mold and a transport. The mold defines a cavity therein. The cavity provides a relief pattern area on an inner surface thereof. The transport is used for transporting a foil with a printed layer thereon into the mold, to set the printed layer in position relative to the relief pattern area.
    Type: Application
    Filed: December 11, 2007
    Publication date: February 26, 2009
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chun-Yuan Chang
  • Publication number: 20080308598
    Abstract: A stapling device includes a housing and a cover pivotally attached to a base member, a staple drive plate received in the housing for staple driving purpose, a lever attached in the housing and engaged between the staple drive plate and the cover, a spring for biasing the cover away from the housing, a spring device attached to the housing for biasing the staple drive plate, and a follower slidably received in the housing for selectively latching the cover to the housing and for preventing the cover from being moved and depressed toward the housing when the housing and base member are rotated away from each other and for preventing the staple drive plate from being triggered or actuated inadvertently.
    Type: Application
    Filed: August 11, 2008
    Publication date: December 18, 2008
    Inventor: Chun Yuan Chang
  • Publication number: 20080266835
    Abstract: A folder has a detachable illumination device disposed on an upper cover of the folder so that the illumination device, such as a lamp, can be momentarily inserted into a specific power socket to provide illumination, or can be detached and placed in a predetermined slot formed on an inner surface of the folder to facilitate the carrying. Thus, the folder can break the limitation in use in various occasions where no sufficient light source is provided, and can thus enhance the utility and the convenience thereof.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventor: Chun Yuan Chang
  • Patent number: D580990
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: November 18, 2008
    Inventor: Chun-Yuan Chang
  • Patent number: D603171
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: November 3, 2009
    Inventor: Chun-Yuan Chang